Concrete floor construction.



M.-S. GOLDSMITH.

CONCRETE FLOOR CONSTRUCTION.

APPLICATION FILED SEPT-24.1915.

Patented Sept. 17, 1918.

Constructions,

MAX S. GOLDSMITH, F CINCINNATI, OHIO.

CONCRETE FLOOR CONSTRUCTION.

Specification of Letters Patent.

Patented Sept, 1?, 1918.

Application filed September 24, 1915. Serial No. 52,480.

To all whom it may concern: 1

Be it known that 1, MAX S. GOLDSMITH, a citizen of the United States of America, and resident of Cincinnati, county of Hamilton, State of Ohio, have invented certain new and useful Improvements in Concrete Floor of which the following is a specification.

This invention relates to improvements in concrete floor constructions and particularly to concrete floor construction of the type disclosed in my copending application serially numbered 869,508.

An object of my invention is to produce a concrete floor construction in which the ceiling is produced in a finished condition simultaneously with the molding of the beams, girders and fioor slabs of the structure.

A further object is to produce a concrete floor construction in which the portion forming the ceiling consists of separately formed members embedded in the concrete of the beams and girders, with one surface finished to present afinished ceiling upon removal of the supporting form work. I

These and other objects are attained in the concrete floor construction described in the following specification and illustrated in the accompanying drawings, in which;

Figure 1 is a fragmental perspective view of aconcrete floor construction embodying my invention.

Fig. 2 is a fragmental sectional view of a door construction embodying my invention.

Fig. 3 is a fragrnental sectional view of a joint food between adjacent arched floor forms.

in constructing a floor embodying my invention, a series oi rows of ceramic tiles are iaid upon the centering boards 5 forming a portion of the temporary form work 6, only the ends of the tile being supported upon the boards, with the edges of the'tiie abutting both longitudinally and transversely. Along each of two of the opposite edges of each tile, are formed two grooves 7 and 8, the grooves 7 being located a short distance from the ed es and having a rectangular I formation, w ile the grooves 8 are formed in the corners and are ii-shaped in formation. With this formation the cot'iperating grooves 8 of adjacent tiles will term a dovetailed slot adapted to receive the plastic concrete and to form a key in the concrete as it hardens, so as to support the abutting edges of the tiles. The rectangular notches 7 are provided for receiving the lower edges of sheet metal arched forms or domes 9, for the purpose of preventing these edges from spreading when the concrete is placed on the forms and while it is still in its plastic condition. The domes or arched forms are preferably constructed of corrugated metal, and in locating them in position on the tiles, the end corrugations of each dome are overlapped as shown in Fig. 3, so that the joint formed will prevent the entrance of the plastic concrete to the space inside the dome. The usual reinforcing rods 13 are then placed between the domes. In pouring the concrete it is worked into the dovetailed grooves formed by the adjacent abutting notches 8 formed in the tiles, and is caused to occupy the space between the sides of the joined domes, so as to form beams and girders. The pouring is continued until the concrete is filled in and covers the tops of the domes to the required depth to form the floor slabs. Thus after the concrete has hardened, and the form work 6 has been removed, the tiles will be supported by the concrete keys 12 formed by the hardened concrete occupying the dovetailed slots 8 and the concrete occupying the spaces between the sides of the domes 9, will form the beams and girders of the structure, the floor slabs 11 forming the floor surface and the tiles 4 forming the ceiling. With such a construction it is unnecessary to finish the surface of the ceiling, especially when the face of the tiles are glazed or formed with ornamental figures or molding to cover the joints formed between adjacent tiles, as disclosed in Fig. 2. If however, it is desired to give the ceiling a plastered finish, the tiles may be of rough construction to receive the plaster.

Having thus described my invention, what T claim is:

in a concrete floor construction the com- Edd bination of a series of tiles with two sets of grooves in the upper faces of the tiles, one set being formed at the upper ends of the opposite edges, being undercut and adapted to cotiperate with adjacent tiles to form v tailed ways, and the other set o grooves being adjacent to the first set of grooves, subscribed my name this 22nd day of Separcheg forms with theirl'1 lower edgesdseated tember, 1915. in an contacte u on t eir inner an outer faces by the W211i of the second set of MAX GOLDSMITH 5 grooves and concrete filling the dovetailed Witnesses:

ways and surrounding the forms. WM. M. GOLDSMITH, In testimony whereof, I have hereunto WALTER F. MURRAY, 

